Which rank has the collar device 'One Gold 1/2-Inch Stripe with One Blue Break Outboard a Specialty Insignia'?

The rank corresponding to the collar device of "One Gold 1/2-Inch Stripe with One Blue Break Outboard a Specialty Insignia" is Lieutenant Junior Grade (LTJG). This distinctive insignia denotes the position and responsibilities of an officer at this level in the naval hierarchy.

Lieutenant Junior Grade typically wears one gold stripe, which signifies their commissioning as an officer, and the blue break outboard indicates that they possess a specific area of expertise or a specialty in their field, differentiating them from more senior ranks. Understanding this insignia is crucial for identifying the rank and its associated duties within a naval context, as it reflects the officer's progression and commitments in their career.